INDIANAPOLIS — A humble coach Rex Ryan showed up Thursday at the NFL Scouting Combine. He admitted he made a mistake at last year’s Combine when he guaranteed his New York Jets would reach the Super Bowl.

Instead, they finished 8-8 and missed the playoffs while star receiver Santonio Holmes became a locker room problem.

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Ryan described last season as “terrible” and said his guarantee put undue pressure on the team. So this time, no guarantee.

“We all feel terrible about the results, how the season ended,” Ryan said. “There’s some lessons well learned. We’re going to fix it. I know I’m the guy for the job to do it.”

But here’s something else that Ryan would not guarantee — that the Jets would not pursue Peyton Manning should he become available. Quarterback Mark Sanchez is also under fire after a subpar year, raising the possibility that the Jets could court Manning if he becomes a free agent.

Asked why he would not kill the Manning-to-Jets rumors, Ryan responded this way.

“Peyton’s under contract to a different team, so I can’t talk about him specifically,” Ryan said. “But with our organization, we will look at everybody. There’s a list of 10 free-agent quarterbacks that I’ve looked at. There’s the draft guys I’ve looked at. We have great corners, but that doesn’t mean we’re not going to do our due diligence, regardless of the position. We will do, always, what’s in the best interest of our organization. That means we’re going to be prepared. We’re going to look at any possibility that’s out there.’’